Themes: Allow template loading functions to filter templates to search for

[amibe]

Allow template loading functions to filter templates to search for.

This affects:

• get_header()
• get_footer()
• get_sidebar()
• get_template_part()

Note: there's an added check such that if the templates value returned is empty() the function returns false.

Allow template loading functions to filter templates to search for.

This affects:

• get_header()
• get_footer()
• get_sidebar()
• get_template_part()

Note: there's an added check such that if the templates value returned is empty() the function returns false.

Trac ticket: https://core.trac.wordpress.org/ticket/51658

[SergeyBiryukov]

Hi there, welcome to WordPress Trac! Thanks for the ticket.

Just noting that this is related to #13239, which was extensively discussed and should also resolve this.

[amibe]

Thank you. Admittedly I'm more interested in being able to prevent the header, footer and sidebar templates from being included in certain situations.

The only way I could think of doing this is a filter for $templates that returns false.

The PR I've submitted is unrelated to changing the path/location of template files.

[hellofromTonya]

This ticket is not directly caused by 5.6 (trunk). As Sergey notes, it's related to #13239, which is Version 3.0. Updating the version to match.